Audio system



FIG. 1 is a front perspective view of an audio system as seen from thefront, top, and right side;

FIG. 2 is a back perspective view thereof, as seen from the back,bottom, and left side;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is an left side view thereof; and,

FIG. 8 is a right side view thereof.

The broken line portions of FIGS. 2 and 4 are included to show unclaimedsubject matter only and form no part of the claimed design.

CLAIM The ornamental design for an audio system, substantially as shownand described.